Associação entre genótipos de feijoeiro, silício e nim no controle da mosca-branca Bemisia tabaci (Gennadius, 1889) biótipo B (Hemiptera: Aleyrodidae)

Abstract

Association between bean genotypes, silicon, and neem in the control of whitefly Bemisia tabaci (Gennadius, 1889) biotype B (Hemiptera: Aleyrodidae)In bean plants, Bemisia tabaci biotype B causes great losses, especially through the transmission of golden mosaic virus. The aim of this work was to evaluate the effect of the association of common bean genotypes with doses of neem oil and silicon on the development and oviposition of whitefly. Experiments were carried out in a greenhouse, in the Plant Protection Department of FCAV/UNESP, where two oviposition tests were performed, free and no-choice, in addition to the antibiosis test. According to the data obtained, we concluded, in the first oviposition experiment, that silicon at 1% reduced the oviposition in free-choice test and neem at 1% reduced oviposition in both tests. Neem oil provided high mortality of nymphs. In the second oviposition experiment, the lowest number of eggs was found for the dose of neem at 0.75% in free-choice test and for neem at 1% in no-choice test.

Bioactivity of Neem oil in leafhopper nymphs Empoasca kraemeri (Hemiptera: Cicadellidae)

“…A árvore de Neem consorciada com a pastagem pode ser um método alternativo de manejo integrado de pragas (OLIVEIRA et al, 2018). Vários estudos foram realizados para desenvolver medidas de controle ambientalmente seguras contra esses tipos de pragas e tentativas foram feitas com o uso da é árvore de neem A. indica (PEIXOTO et al, 2017).…”

Silicate fertilization in non-conventional vegetables in the southern region of Minas Gerais in Brazil

“…Although Si is not characterized as essential for plants, several studies show that their growing performance in environments with Si availability is favored despite their stress, and are superior in comparison to those grown in soils with a low availability of this mineral. This fact is mainly attributed to Si's capacity to promote tolerance to biotic and abiotic stresses in plants (Zanetti et al, 2016;Peixoto & Junior, 2017).…”